Apple iPhone 4G - Manual (Page 12)

Lock iPhone Press the On/Off Sleep/Wake button.
Unlock iPhone Press the Home button or the On/Off
Sleep/Wake button, then drag the slider.
Turn iPhone completely off Press and hold the On/Off Sleep/Wake button for
a few seconds until the red slider appears, then
drag the slider. When iPhone is off, incoming calls
go straight to voicemail.
Turn iPhone on Press and hold the On/Off Sleep/Wake button
until the Apple logo appears.
For information about changing how long before iPhone locks, see “Auto-Lock” on
page 195. For information about setting iPhone to require a passcode to unlock it, see
“Passcode Lock” on page 195.
Home Button
Press the Home button at any time to go to the Home screen, which contains your
iPhone apps. Tap any app icon to get started. To see apps you’ve recently used, double-
click the Home button. See “Opening and Switching Apps” on page 29.
Volume Buttons
When you’re on the phone or listening to songs, movies, or other media, the buttons
on the side of iPhone adjust the audio volume. Otherwise, the buttons control the
volume for the ringer, alerts, and other sound effects.
WARNING: For important information about avoiding hearing loss, see the Important
Product Information Guide at www.apple.com/support/manuals/iphone.
To adjust the volume, use the buttons on the side of iPhone.
Volume
up
Volume
down
To set a volume limit for music and videos on iPhone, see “Music” on page 210.
12 Chapter 1 iPhone at a Glance